Genus: Microdontosaurus ZHAO, 1983 (nomen nudum)
Etymology: Greek, mikros, "small," Greek, odont, "tooth" and Greek, sauros, "lizard."

Species: dayensis ZHAO, 1983 (nomen nudum)
Etymology: From Daye.

Holotype:

Locality: Qamdo Basin, 31’05”N, 97’27”E, eastern Tibet.

Horizon: Dabuka Formation.

Biostratigraphy:

Age: Middle Jurassic.

Material: